AI 中文总结
研究利用未来引力波探测器探测河外环绕致密双星并合的系外行星，采用提取引力波中质心运动学信息重建外部势轮廓的技术，经原理验证发现能在一定参数范围和置信度下识别系外行星并确定其质量。
AI 中文摘要
系外行星是各类地基和天基望远镜的高价值目标。目前已知的系外行星都在银河系内，部分围绕致密天体运行。本文研究利用未来引力波探测器（如A+、爱因斯坦望远镜和DECIGO）探测围绕恒星质量致密双星并合（CBCs，如双中子星、中子星 - 黑洞和双黑洞）运行的河外系外行星的可能性。我们采用通过提取CBC发射引力波中编码的质心运动学信息来重建外部势轮廓的技术。外部势由环绕CBC的系外行星提供，引力波波形上的特征源于CBC质心围绕CBC - 系外行星质心的“摆动”。作为原理验证，我们考虑了一些未来探测器可探测的CBC示例以及一系列环绕CBC的系外行星参数，这些行星轨道有圆形和偏心轨道。我们发现，在所考虑的大部分参数范围内，我们能够在68%的置信度下，将环绕CBC的系外行星质量确定在其真实值的\(\mathcal{O}(1)\)倍范围内（轨道倾角未知），从而识别其存在。
英文摘要
Exoplanets are high-value targets for a variety of ground and space-based telescopes. All known exoplanets are Galactic, and a fraction of them orbit compact objects. In this work, we investigate the possibility of detecting extragalactic exoplanets orbiting stellar-mass compact binary coalescences (CBCs), such as binary neutron stars, neutron star-black holes, and binary black holes, using future gravitational wave (GW) detectors, including A+ (LIGO in O5), Einstein Telescope, and DECIGO. We use the technique of reconstructing an external potential's profile by extracting information about the centre-of-mass (CoM) kinematics of a CBC encoded in the GWs it emits. In this work, the external potential is provided by the circum-CBC exoplanet, and the resulting signature on the GW waveform comes from the ``wobble'' of the CBC's CoM around the CBC-exoplanet barycentre. As a proof of principle, we consider a few example CBCs detectable with future detectors and a range of circum-CBC exoplanet parameters in circular and eccentric orbits. We find that for a significant fraction of the range of parameters considered, we can identify the presence of a circum-CBC exoplanet by extracting its mass (up to an unknown orbital inclination angle) within a factor $\mathcal{O}(1)$ of its true value, at $68\%$ confidence.
